CN202390455U - Oxygen-enriched balancing device for blast furnace - Google Patents
Oxygen-enriched balancing device for blast furnace Download PDFInfo
- Publication number
- CN202390455U CN202390455U CN2011204960295U CN201120496029U CN202390455U CN 202390455 U CN202390455 U CN 202390455U CN 2011204960295 U CN2011204960295 U CN 2011204960295U CN 201120496029 U CN201120496029 U CN 201120496029U CN 202390455 U CN202390455 U CN 202390455U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- enriched
- blast furnace
- rich
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Manufacture Of Iron (AREA)
- Regulation And Control Of Combustion (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides an oxygen-enriched balancing device for a blast furnace, which comprises a main low-pressure oxygen pipe, and an oxygen compressor, wherein the oxygen compressor is connected with the main low-pressure oxygen pipe by a first quick cut-off valve and a first flowmeter, and the oxygen compressor is connected with a steel smelting furnace by a pipe; the oxygen-enriched balancing device for the blast furnace is characterized in that the main low-pressure oxygen pipe is connected with an oxygen-enriched air mixer by a second quick cut-off valve and a second flowmeter, and the oxygen-enriched air mixer is connected with an air blower of a blast furnace hot blast stove. The oxygen-enriched balancing device for the blast furnace can utilize enriched low-pressure oxygen to directly complete blast furnace low-pressure oxygen enrichment under the condition that high-pressure oxygen supply for steel making, effectively avoid emission loss of residual high-pressure oxygen, and fully play the capability of an oxygen generation system, thus achieving balance between supply and demand of the whole system, ensuring the oxygen-enriched control reliability, oxygen-enriched air uniformity and oxygen-enriched air blast safety, and greatly lowering oxygen supply cost.
Description
Technical field
The utility model relates to a kind of blast furnace rich gas device, and especially a kind of low oxygen equilibrator in rich-oxygen of blast furnace is carried belongs to technical field of metallurgical equipment.
Technical background
Rich-oxygen of blast furnace is effectively to improve temperature of combustion and hotblast stove thermo-efficiency, reduces coke ratio simultaneously, and reinforcing blast furnace is smelted, and improves furnace processor, and an energy-saving and cost-reducing important means.At present in metallurgy industry, mainly be to be main with steel making oxygen, it is auxilliary that blast furnace uses oxygen, generally all requires the oxygen compressor oepration at full load, makes oxygen pressurization back supply steel-making to use, rich oxygen supplies blast furnace to use again.Specifically be earlier the Low Pressure Oxygen (about 22KPa) of oxygenerator to be forced into 2.5MPa through press to see off, after the oxygen voltage regulating station reduces pressure, deliver to the cold blast pipe again, oxygen supply pressure should generally be not less than 0.5Mpa greater than the air pressure behind the gas blower machine.Though utilized rich oxygen so to a certain extent; But obviously exist power consumption huge, and power loss is serious in the increase and decrease pressure process, high pressure oxygen diffuses the rate of loss height; The wasting of resources is big; Cause shortcomings such as oxygen supply cost height, especially under the situation that subsequent use oxygenerator exists, power consumption is very outstanding.Therefore, be necessary prior art is improved.
Summary of the invention
For overcoming the above-mentioned deficiency that prior art exists, the purpose of the utility model is to provide a kind of rich-oxygen of blast furnace equilibrator.
The utility model is accomplished through following technical proposal: a kind of rich-oxygen of blast furnace equilibrator; Comprise the low oxygen person in charge; Be responsible for the oxygen compressor that links to each other through first repid cut-off valve and first flow meter with low oxygen; Oxygen compressor links to each other with steel melting furnace through pipeline, it is characterized in that the low oxygen person in charge links to each other with oxygen-rich air mixing device through second repid cut-off valve, second under meter, and oxygen-rich air mixing device links to each other with the gas blower of blast funnace hot blast stove; To carry the low pressure oxygen enrichment to gas blower, carry high temperature, oxygen-rich air through gas blower, hotblast stove to blast furnace again through repid cut-off valve, under meter, oxygen-rich air mixing device.
Between said second under meter and the oxygen-rich air mixing device high pressure oxygen is set and diffuses valve, diffuse, guarantee the oxygen enrichment delivery safety as required pressure is surpassed the high-pressure oxygen-enriched of set(ting)value.
Through threeway the nitrogen transfer lime is set between said oxygen-rich air mixing device and the gas blower,, guarantees oxygen enrichment delivery system safety so that when maintenance goes out oxygen with nitrogen replacement.
Said blower inlet end and exit end are provided with the oxygen-rich concentration meter respectively, to regulate and control oxygen-enriched content through surveyed data in good time, guarantee that blast-furnace smelting normally carries out.
The utility model compared with prior art has advantage and effect: adopt such scheme; Can be when guaranteeing that the steel-making high pressure is with oxygen; Can utilize the rich oxygen of low pressure directly to accomplish blast furnace low pressure oxygen enrichment; Effectively avoid the loss of diffusing of the surplus oxygen of high pressure, the ability of oxygen generation system is not fully exerted, thereby reach the balance between supply and demand of whole oxygen system; And the safety of oxygen enrichment control, the homogeneity of oxygen-rich air, the security of oxygen enriched blast are protected, greatly reduced the oxygen supply cost simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be further described.
Like Fig. 1; The rich-oxygen of blast furnace equilibrator that the utility model provides; Comprise the low oxygen person in charge 1, through the oxygen compressor 4 that first repid cut-off valve 2 and first flow meter 3 link to each other with the low oxygen person in charge 1, oxygen compressor 4 links to each other with steel melting furnace 5 through pipeline; Said low oxygen is responsible for 1 and is linked to each other with oxygen-rich air mixing device 12 through second repid cut-off valve 15, second under meter 14; Oxygen-rich air mixing device 12 links to each other with the gas blower 9 of blast funnace hot blast stove, to carry the low pressure oxygen enrichments to gas blower 9 through second repid cut-off valve 15, second under meter 14, oxygen-rich air mixings device 12, again through gas blower 9, hotblast stove 7 to blast furnace 6 conveying high temperature, oxygen-rich air; Between second under meter 14 and the oxygen-rich air mixing device 13 high pressure oxygen is set and diffuses valve 13, diffuse, guarantee the oxygen enrichment delivery safety as required pressure is surpassed the high-pressure oxygen-enriched of set(ting)value; The nitrogen transfer lime of band valve 11 is set on it through threeway between oxygen-rich air mixing device 13 and the gas blower 9,, guarantees oxygen enrichment delivery system safety so that go out oxygen with nitrogen replacement during maintenance; Said gas blower 9 inlet ends and exit end are provided with oxygen-rich concentration meter 11 and 8 respectively, to regulate and control oxygen-enriched content through surveyed data in good time, guarantee that blast-furnace smelting normally carries out.
Claims (4)
1. rich-oxygen of blast furnace equilibrator; Comprise the low oxygen person in charge; Be responsible for the oxygen compressor that links to each other through first repid cut-off valve and first flow meter with low oxygen; Oxygen compressor links to each other with steel melting furnace through pipeline, it is characterized in that the low oxygen person in charge links to each other with oxygen-rich air mixing device through second repid cut-off valve, second under meter, and oxygen-rich air mixing device links to each other with the gas blower of blast funnace hot blast stove.
2. rich-oxygen of blast furnace equilibrator according to claim 1 is characterized in that between said second under meter and the oxygen-rich air mixing device high pressure oxygen being set diffuses valve.
3. rich-oxygen of blast furnace equilibrator according to claim 1 is characterized in that being connected the nitrogen transfer lime through threeway between said oxygen-rich air mixing device and the gas blower.
4. rich-oxygen of blast furnace equilibrator according to claim 1 is characterized in that said blower inlet end and exit end are provided with the oxygen-rich concentration meter respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204960295U CN202390455U (en) | 2011-12-03 | 2011-12-03 | Oxygen-enriched balancing device for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204960295U CN202390455U (en) | 2011-12-03 | 2011-12-03 | Oxygen-enriched balancing device for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202390455U true CN202390455U (en) | 2012-08-22 |
Family
ID=46665392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204960295U Expired - Fee Related CN202390455U (en) | 2011-12-03 | 2011-12-03 | Oxygen-enriched balancing device for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202390455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060005A (en) * | 2013-03-18 | 2014-09-24 | 宝山钢铁股份有限公司 | Oxygen enrichment system of blast furnace blower |
| CN114317854A (en) * | 2022-02-11 | 2022-04-12 | 山东钢铁集团永锋临港有限公司 | Control method for oxygen-enriched blast in blast furnace ironmaking production |
-
2011
- 2011-12-03 CN CN2011204960295U patent/CN202390455U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060005A (en) * | 2013-03-18 | 2014-09-24 | 宝山钢铁股份有限公司 | Oxygen enrichment system of blast furnace blower |
| CN114317854A (en) * | 2022-02-11 | 2022-04-12 | 山东钢铁集团永锋临港有限公司 | Control method for oxygen-enriched blast in blast furnace ironmaking production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114317853B (en) | Based on 2500m 3 Heating method for high-temperature gas by carbon-carbon circulation blowing of blast furnace gas | |
| CN201678686U (en) | Oxygen-enriching device in front of blast-furnace blower | |
| CN113549717B (en) | Blast furnace injection type system for producing European and metallurgical furnace gas | |
| CN114457202B (en) | Coal gas heating system for high-temperature coal gas injection of hydrogen-carbon-rich circulating blast furnace | |
| CN102806344A (en) | Oxygen-enriched ladle baking device by using low calorific value blast furnace coal gas | |
| CN103122398A (en) | Smoke self-circulation preheating coal dust injection technology and device | |
| CN202390455U (en) | Oxygen-enriched balancing device for blast furnace | |
| CN101144117A (en) | Oxygen-enriched sintering technique | |
| WO2023134368A1 (en) | Ultrahigh oxygen-enriched low-carbon smelting method | |
| CN203728859U (en) | Oxygen supply device arranged in front of blast furnace blower | |
| CN103014205A (en) | Oxygen supply method for oxygen-enriched coal injection of blast furnace | |
| CN207313541U (en) | Ou Ye stove coal gas devices | |
| CN106119449A (en) | A kind of blast furnace whole world group smelting process | |
| CN101482223B (en) | Air distributing device and method | |
| CN103468935B (en) | Production method of sinter containing high-crystal-water lump ore | |
| KR20080106418A (en) | Method of integrating a blast furnace with an air gas separation unit | |
| CN215799659U (en) | Blast furnace gas injection system for Europe and metallurgy | |
| CN207230598U (en) | Oxygen-enriched combustion system of generator set | |
| CN217103938U (en) | Hydrogen-rich carbon blast furnace iron-making device with low CO2 emission of hydrogen-rich fuel gas | |
| WO2023147719A1 (en) | Protective gas supply and recycling method for cold-rolling annealing furnace | |
| CN106222343B (en) | Oxygen enrichment system and method for blast furnace blower | |
| CN102776305B (en) | Blast oxygen enrichment mixing energy-saving device of blast furnace | |
| CN213680760U (en) | Air supply control system for conveying pulverized coal based on waste gas of hot blast stove | |
| CN102776304B (en) | Blast oxygen enrichment energy-saving technology and device for blast furnace | |
| CN114410862A (en) | Hydrogen-rich fuel gas low CO2Discharged hydrogen-carbon-rich blast furnace iron-making process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |